Search results for "SELE"
showing 10 items of 4721 documents
Using Temporal Expectation to Assess Auditory Streaming in Mice
2018
Auditory streaming is the process by which environmental sound is segregated into discrete perceptual objects. The auditory system has a remarkable capability in this regard as revealed in psychophysical experiments in humans and other primates. However, little is known about the underlying neuronal mechanisms, in part because of the lack of suitable behavioural paradigms in non-primate species. The mouse is an increasingly popular model for studying the neural mechanisms of perception and action because of the range of molecular tools enabling precise manipulation of neural circuitry. Here we present a novel behavioural task that can be used to assess perceptual aspects of auditory streami…
Clean Agent Selection Approached by Fuzzy TOPSIS Decision-Making Method
2008
Abstract. It is well known that halons are ozone-depleting substances and their release into the atmosphere has contributed in the last decades to the reduction in the ozone layer. In consequence to the Montreal Protocol, an international agreement designed to gradually eliminate the use of such substances, fire protection industry researchers faced the challenge of finding effective solutions to replace halon extinguishers. This research aims to provide a method to support the decision maker in the selection of the most suitable extinguisher substance for a specific application. According to such framework, a set of quantitative and qualitative criteria has been established in the decision…
LEAVES OFNERIUM OLEANDERL. AS BIOACCUMULATORS OF POLYCYCLIC AROMATIC HYDROCARBONS (PAH) IN THE AIR OF PALERMO (ITALY): EXTRACTION AND GC-MS ANALYSIS,…
2005
Polycyclic Aromatic Hydrocarbons (PAH) were determined in the leaves of Nerium oleander L. an evergreen plant that occurs widely in both urban and rural areas, to monitor the degree of pollution in the urban area of Palermo (Italy) compared to remote areas. Twenty sites (urban roadside, urban, urban park, suburban and rural) in and around Palermo city were investigated. The purpose of this research was to investigate concentration levels and distribution patterns and relate them to possible sources. Analysis of 19 PAH was performed by gas chromatography/mass spectrometry (GCMS) using selected ion monitoring (SIM). The total amount of PAH ranged from 10 to 166 μg/Kg d.w. Each source gives ri…
Los criterios de selección de los trabajadores afectados por el despido colectivo
2019
La Tesi aborda la recerca relativa als criteris de selecció dels treballadors afectats en el marc de l’acomiadament col·lectiu en el Dret espanyol. Per això, es delimita teòricament el marc d’estudi –el dels criteris de selecció–, amb referència a la seua immediata contextualització normativa, que no és altra que la relativa a la regulació dels acomiadaments col·lectius en l’ordenament espanyol, tot i que, això sí, destacant-ne les implicacions del Dret de la Unió Europea. Quant a l’acomiadament col·lectiu, la recerca se situa en els efectes produïts per la important reforma laboral duta a terme l’any 2012, així com en el sempre difícil equilibri entre els legítims interessos empresarials i…
Comparison of wormlion behavior under man-made and natural shelters: urban wormlions more strongly prefer shaded, fine-sand microhabitats, construct …
2019
Abstract Urban habitats differ from their natural surroundings in various aspects, such as a higher temperature and a distinct species composition. It is therefore not surprising that animal behavior too differs between these habitat types. We studied the foraging and habitat selection behavior of a pit-building predator, a wormlion, originating from either an urban or a more natural site. Wormlions occur in nature under structures that provide shelter from sunlight and rain, such as caves, and are also common in cities, occurring under artificial shelters. Wormlions construct pit-traps to hunt arthropods, and the pits constructed by urban wormlions were larger than those constructed by wor…
Organocatalytic Enantioselective Vinylogous Henry Reaction of 3,5-Dimethyl-4-nitroisoxazole with Trifluoromethyl Ketones
2017
The enantioselective vinylogous Henry reaction of 3,5-dimethyl-4-nitroisoxazole with trifluoromethyl ketones employing a bifunctional squaramide organocatalyst has been developed. A series of isoxazole bearing trifluoromethyl-substituted tertiary alcohols, 2-substituted (R)-1,1,1-trifluoro-3-(3-methyl-4-nitroisoxazol-5-yl)propan-2-ols, were obtained under these mild reaction conditions in good yields and moderate to good enantioselectivities
Acid–base properties of functionalised tripodal polyamines and their interaction with nucleotides and nucleic acids
2010
Novel, highly positively charged tripodal polyamines with appended heterocyclic moieties revealed an intriguing panel of protonation species within the biologically relevant range. Studied compounds bind nucleotide monophosphates by mostly electrostatic interactions but only the imidazole analogue showed selectivity toward UMP in respect to other nucleotides. Strong binding of all the studied compounds to both ds-DNA and ds-RNA is to some extent selective toward the latter, showing rather rare RNA over DNA preference.
CCDC 299920: Experimental Crystal Structure Determination
2011
Related Article: M.Seredyuk, I.O.Fritsky, R.Kramer, H.Kozlowski, M.Haukka, P.Gutlich|2010|Tetrahedron|66|8772|doi:10.1016/j.tet.2010.08.071
Ecology of Vastedda della valle del Belìce cheeses: A review and recent findings to stabilize the traditional production
2018
The increasing request for classic foods has led to a higher demand for cheeses enjoying a “recognition of quality” status. This phenomenon has also affected Sicilian dairy products, in particular protected designation of origin (PDO) “Vastedda della valle del Belìce” (VdB), a cheese traditionally available only during the summer season, but requested year round. The variations of the microbial populations of raw milk among the seasons influence the microbiological quality of the cheeses produced. This review article reports the historical importance of cheeses and the traditional equipment used for dairy productions in Sicily with a specific focus on VdB. The microbial ecology of this chee…
Sorbenty i membrany polimerowe w przygotowywaniu do analizy próbek środowiskowych i biologicznych
2005
Istotny element procedur analitycznych dotyczących skomplikowanych mieszanin jakimi są próbki środowiskowe bądź biologiczne stanowi wstępne wyodrębnienie, oczyszczenie i zatężenie analizowanej substancji. Do tego celu coraz częściej stosuje się sorbenty polimerowe i układy membranowe. W niniejszym przeglądzie przedstawiono najważniejsze i najczęściej używane metody przygotowania próbek środowiskowych do analizy, czyli ekstrakcję do fazy stałej (SPE) i unieruchomione membrany ciekłe (SLM). Szczególną uwagę zwrócono na możliwość wykorzystania w SPE sorbentów o zróżnicowanej polarności. Omówiono możliwości wykorzystania ekstrakcji z zastosowaniem SLM, w tym ekstrakcji przy użyciu selektywnych …